Grad schools don’t care that you make a great chicken casserole or play intramural bocce ball. They do care about those activities that speak to your suitability for graduate work. As a graduate student, you'll be called upon to do difficult coursework and research. You may have to teach undergraduate classes within your field and conceivably even design a course. And you'll have to get along with a diverse group of colleagues who will sometimes work very closely with you. Any experience in school, work, or your extracurricular life that speaks to those abilities is worth talking about.